Hallberg, Josef Henrik, 1874- · New York city, The Moving picture world · leaf 119
nly necessary to maintainthe high temperature in the positive crater. In view ofthis fact, it becomes .necessary to centralize all possibleenergy at the positive crater and everything possibleshould be done to maintain the carbon separation onlygreat enough so that the negative carbon point will… … Fig. 60 Fig. 61 positive crater and below the negative crater, are intendedto show the accumulation of impurities in the carbon.These generally drop off without being consumed, andfall in the bottom of the globe or lamp house, if in a pro-jection lamp. MOTION PICTURE ELECTRICITY 113 Fig. 60…
Motion picture theaters · Electric lighting
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